col7

void doStuff() {
  float tt = map(t, t1, t2, 0, TWO_PI);
  float y = map(t, t1, t2, 50, 450);
  float x = 250;
  pushMatrix();
  translate(x, y);
  int num = 10;
  for (int i=0; i<num; i++) {
    pushMatrix();
    rotate(PI/2+TWO_PI/num*i);
    float px = cos(tt-PI/2)*map(sin(tt-PI/2), -1, 1, 0, 100);
    float py = sin(tt-PI/2)*map(sin(tt-PI/2), -1, 1, 0, 100);
    float scal = map(sin(tt-PI/2), -1, 1, 1, 3);
    pushMatrix();
    translate(px,py);
    float r = map(sin(tt-PI/2),-1,1,0,TWO_PI);
    float x2 = map(sin(tt-PI/2),-1,1,0,50);
    float sw = map(sin(tt-PI/2),-1,1,1,20);
    rotate(r);
    colorMode(HSB,360,100,100);
    stroke(360.0/num*i,90,90,200);
    //fill(360.0/num*i,90,90,200);
    strokeWeight(sw);
    noFill();
    arc(x2, 0, 100, 100, 0, (TWO_PI/num)*scal);
    colorMode(RGB,255);
    popMatrix();
    popMatrix();
  }
  popMatrix();
  noStroke();
}